Electric signaling system.



No. 692,959. Patented Feb. ll, I902.

' A. J. WILSON &. W. W. SALMON.

ELECTRIC, SIGNALING" SYSTEM.

(Application filed Nov. 6, 1900.)

(No Model.)

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UNITED STATES PATENT @FFICE.

ADONIRAM .I. IVILSON, OF WVESTFIELD, NEHV JERSEY, AND WILLWIER W. SALMON, OF CHICAGO, ILLINOIS.

ELECTRIC SIGNALING SYSTEM.

SPECIFICATION forming part of Letters Patent No. 692,959, dated February 1 1, 1902.

Application filed November 6,1900. Serial No. 35,683. (No model) T aZZ whom, it may concern:

Be it known that we, ADONIRAM J. \VILSON, a resident of WVestfield, Union county, and State of New Jersey, and WILMER W. SAL- MON, a resident of Chicago, Cook county, Illinois, citizens of the United States, have invented certain new and useful Improvements in Electric Signaling Systems, of which the following is a specification.

This invention relates to an improved electric signaling system.

The invention seeks to provide an arrange ment of circuits which will insure safe and eflicient conductor-of traffic, onein which the line-wires will be diminished in number, one adapted to work home and distant signals, and to work such signals on the normal danger principle.

The accompanying drawing, forming a part of this specification, shows in diagram one embodiment of the various features of the invention with the signals normally at danger.

The signals themselves may be of the inclosed type or of the exposed semaphore-blade type or any other type.

In the accompanying drawing the distant signals are shown as being located about midway between the home signals. If desired, however, the distant signals may, with the home signals, be located at the entrance of the blocks, a home and a distant signal together.

One of the principal features of the invention is the peculiar arrangement of the signalcircuit, which includes a neutral magnet and a polarized magnet. By means of these two magnets in a signal-circuit the home and distant signals associated with such circuit are operated or controlled, the home signal by the neutral magnet and the distant signal by the polarized magnet.

Some of the features of the invention may be employed to work signals normally at safety.

Referring now to the particular embodiment shown in the drawing, 2 and 3 are the subsections which constitute the first block, and 4 and 5 are the subsections which constitute the second block.

6 is the subsection in advance of the block 4 5, and 1 is the subsection in the rear of the block 2 3. The rails of subsection 2 are included in a track-circuit which includes the magnet 7 and circuit-breaker 8 and also the magnet 9, which is connected to the rails on one side of the track and in series with the magnet 7. The rails of subsection 3 are connected in a circuit which includes the magnet 10, operating the circuit-controller 8. The rails of subsections 4 are arranged in a circuit which includes the magnet 11, the circuit-controller 12, and also the magnet 13, which is connected to the rails on one side of the track and in series with the magnet 11. The rails of subsection 5 are arranged in a circuit which includes the magnet 14, operating circuit-controller 12. The rails of subsection 6 are arranged in a circuit which contains the magnet and a circuit-controller (not shown) similar to circuit-controller 12. Home signal 16 guards the block 2 3, distant signal 17 and home signal 18 guard the block 4 5, and distant signal 19 and home signal 20 guard the block which begins with subsection 6.

Referring now to the circuits for the signals 17 and 18, it may be traced as follows: from battery 21, pole-changer 22, neutral magnet 23, wire 24, circuit-controller 25, polarized magnet 26, circuit-controller 27 and return-wire 28, normally-closed circuitcontroller 37, operated by magnet 11, polechanger 22 to battery. Circuit-controller 25 is normally closed and is operated by magnet 10. I Circuit-controller 27 is normally open and is operated by magnet 9. Magnet 10 also operates a normally open circuit-controller 29, connected in a bridge across from wire 24 to wire 28, so that when this bridge 30 is closed neutral magnet 23 may be energized, although circuit-controller 27 is open. Magnet 23 operates a normally open circuitcontroller 31 in the circuit of the motor 32. Polarized magnet 26 operates a normally open circuit-controller 33, included in the circuit with the magnet 34, which magnet operates a normally open circuit-controller 35 in the circuit of the motor 36. Polechanger 22 is connected in suitable manner and preferably by mechanical connection, which may be represented by the rod 37, with the signal 18, so that the pole-changer is shifted by the movement of the signal. In the normal position of the signal 18 at danger the position of the pole-changer would be such that the current from battery 21, although energizing neutral magnet 23, will not energize polarized magnet 26. When the signal 18 goes to safety, the pole-changer is so shifted that the current from the battery is reversed and energizes both magnets 23 and 26. When the magnet 23 is energized, motor 32 pulls the signal to safety, and when the magnet 23 is deenergized the signal 18 is released and goes to danger. When the magnet 26 is energized, the circuit of the magnet 34 is closed, so as to drive the motor 36 to pull the signal 17 to safety. When the magnet 26 is denergized, the signal is released and goes to danger. The signalcircuit of signals 19 and 20 is arranged in precisely the same way as the signal-circuit just traced for signals 17 and 18. Itincludes battery 38, pole-changer 39, magnet 40, circuit-controller 41, magnet 42, circuit-controller 43, and circuit-controller 44, and has a bridge 45, containing the circ uit-controller 46. The circuit for the home signal 16 and its corresponding distant signal has likewise the same arrangementmontaining the normally closed circuit-controller 47, operated by magnet 7, &c.

The operation of the system is as follows: A train having put the signal 16 to safety when in subsection 1 enters subsection 2,

thereby shunting the magnet 7 and breaking at 47 the circuit for the signal 16, thereby putting the signal to danger behind the train. When the train passes magnet 9, it also shunts this magnet and closes at 27 the signal-circuit for the signals 17 and 18, thereby energizing neutral magnet 23 and putting the signal 18 to safety. The movement of signal 18 to safety reverses the current in the signal-circuit and energizes the polarized magnet 26 to put the distant signal 17 to safety, so that both of these signals go to safety in advance of the train. When the train passes into subsection 3, it shunts the magnet 10, thereby keeping magnets 7 and 9 deenergized, the former of which magnets thus keeps the signal 16 to danger behind the train. The deenergization of magnet 9, although. it permits the cir cuit-controller 27 to remain closed, nevertheless does not cause the polarized magnet 26 to be energized, because the shunting of magnet 10 closes the branch 30 at 29, thereby shunting magnet 26 and causing the signal 17 to go to danger behind the train. When the train enters subsection 4, the magnets 7, 9, and 10 and their circuit-controllers return to their normal condition; but the magnet 11 is shunted, thereby breaking the signal-circuit at 37 and holding at danger signals 17 and 18. When the train passes magnet 13, signals 20 and 19 are in the same way put to safety by the operation of their signal-circuit, similar to that just described. When the train passes signal 19, the signal goes to danger, and when it passes signal 20 and enters the block guarded by the signals 19 and 20 these signals are held to danger behind the train as long as it is in such block.

It will be observed that in this system the movementof the home signal to safety initiates the operation which puts the distant signal for the same block to safety, this being done by the shifting of the pole-changer. The magnets 23 and 26 may be called the magnets for the signals 18 and 17 ,respectively, since they control their operation. These magnets are shown in the accompanying drawing as controlling the opening and closing of the motor-circuits. They may, however, be employed in any other'way so as to control the application of power for the movement of thesignals. Forexample,theymaythrowinto operation clutch mechanism to connect the signals with the motors or other source of power. v

While the various features of the invention are shown in what is now believed to be their best embodiment, various changes may nevertheless be made without departing from the scope of the invention. For example, the system might be arranged with signals normally at safety instead of normally at danger. Again, the distant signals might be used for home signals. For example, signals 17 and 19 might be used as home signals, in which case subsections 3 and Lwould constitute the block guarded by the signal 17, subsection 4 being an overlap, and subsections 4 and 5 would constitute the block for the signal 18, subsection 5 being an overlap.

Vvhat we claim as new and desire to secure by Letters Patent, is-

1. In an electric signaling system, the combination of a home signal and a distant signal; a signal-circuit for said signals containing a neutral magnet for the home signal, a

polarized magnet for the distant signal and a pole-changer; means for energizing the neutral magnet to operate the home signal and means for shifting the pole-changer to energize the polarized magnet and operate the distant signal, said means being auto matically operated upon the energization of the neutral magnet.

2. In an electric signaling system, the combination of a home signal and a distant signal; a signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; means for energizing the neutral magnet to operate the home signal; and means operated by the home signal for shifting the pole-changer to energize the polarized magnet and operate the distant signal.

3. In an electric signaling-system, the combination of a home signal and a distant signal, both normally at danger; a normally-deenergized signal-circuit for said signals containing a neutral magnet for the-home signal,

a polarized magnet for the distant signal and a pole-changer; means for energizing the signal-circuit and thereby energizing the neutral magnet to put the home signal to safety; and mechanical means operated by the home signal for shifting the pole-changer to energize the polarized magnet to put the distant signal to safety.

at. In an electric signaling system the combination of a home signal and a distant signal, both normally at danger; a normally deenergized signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; means for energizing the signal-circuit and thereby energizing the neutral magnet to put the home signal to safety; and means operated by the home signal for shifting the pole-changer to energize the neutral magnet to put the distant signal to safety.

5. In an electric signaling system, the combination of a home signal and a distant signal; a signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; means for energizing the neutral magnet to operate the home signal; means for shifting the pole-changer to energize the polarized magnet and operate the distant signal, said means being automatically operated upon the energization of the neutral magnet; and means for holdingsaid signals to danger when a train is in advance thereof.

6. In an electric signaling system, the combination of a home signal and a distant signal, both normally at danger; a normally deenergized signal-circuit for said signals containinga neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; means for energizing the signal-circuit and thereby energizing the neutral magnet to put the home signal to safety; means for shifting the pole-changer to energize the polarized magnet to put the distant signal to safety; and means for holding said signals to danger when a train is in advance thereof.

7. In an electric signaling system, the combination ofa home signal and adistant signal; a signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a polechanger; means for energizing the neutral magnet to operate the home signal; means for shifting the pole-changer to energize the polarized magnet and operate the distant signal, said means being automatically operated by the energization of the neutral magnet; and track-circuits for operating the signal-circuit.

8. In an electric signaling system, the combination of a home signal anda distant signal; a signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a polechanger, means for energizing the neutral magnet to operate the home signal; means operated by the home signal for shifting the polechanger to energize the polarized magnet and operate the distant signal; and track-circuits for operating the signal-circuit.

9. In an electric signaling system, the combination of a home signal and a distant signal, both normally at danger; a normally deenergized signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a polechanger; means for energizing the signal-circuit and thereby energizing the neutral magnet to put the home signal to safety; means for shifting the pole-changer to energize the polarized magnet to put the distant signal to safety; and track-circuits for operating the signal-circuit.

10. In an electric signaling system the combination of a home signal and a distant signal, both normally at danger; a normally deenergizecl signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; means for energizing the signalcircuit and thereby energizing the neutral magnet to put the home signal to safety; means operated by the home signal for shifting the pole-changer to energize the polarized magnet to put the distant signal to safety; and track-circuits for operating the signalcircuit.

11. In an electric signaling system the combination of a home signal and a distant signal guardingablock ofatrack, both signals being normally at danger; a normally deenergized signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a polechanger; and means controlled by a train for energizing and deenergizing the signal-circuit and for shifting the pole-changer and thereby energizing and deenergizing said magnets to operate the signals; the arrangement being such that both of said signals may be put to safety bya train in the rear thereof; the distant signal may be put to danger by a train between said signals, and both of said signals may be put to danger by atrain in the block guarded by said signals.

12. In an electric signalingsystem the combination of a home signal and a distant signal guarding a block of a track, both signals being normally at danger; a normally deenergized signal-circuit for said signals containing a neutral magnet for the home signal, a polarized magnet for the distant signal and a pole-changer; and means controlled by a train for energizing and deenergizing the signalcircuit and for shifting the pole-changer and thereby energizing and denergizing said magnets to operate the signals; the arrangement being such that both of said signals may be put to safety by a train in the rear thereof; the distant signal may be put to danger by a train between said signals, and both of said signals may be put to danger by a train in the block guarded by said signals, the movement of the home signal to safety initiating of said signals, and means for energizing the neutral magnet andthereupon automatically operating the pole-changer to energize the polarized magnet.

14:. In an automatic electric signaling system, the combination of two signals separated from each other and normally at danger, said signals guardinga common portion of a track, a signal-circuit controlled or operated by a train for operating said signals and containinganeutral magnet for the signal in advance, and a polarized magnet for the signal in the rear, a pole-changer operated by one of said signals, whereby the movement of the signal in advance to safety initiates the operation of the polarized magnet to put the signal in the rear to safety.

15. In an automatic electric signaling system, the combination of two signals separated from each other and normally at danger, said signals guarding a common portion of a track, a signal-circuit controlled or operated by a train for operating said signal and containinganeutral magnet for the signal in advance, and a polarized magnet for the signal in the rear, track-circuits operated by a train, and a pole-changer operated by one of said signals for controlling or operating the signalcircuit.

16. In an automatic electric signaling system, the combination of two signals separated from each other and normally at danger, said signals guardinga common portion of a track; a signal-circuit controlled or operated by a train for operating said signals and containing a neutral magnet for the signal in advance and a polarized magnet for the signal in the rear, an electric switch mechanically operated by the said signal the arrangement being such that the movement of the signal in advance to safety initiates the operation of the polarized magnet to put the signal in the rear to safety, and track-circuits operated byatrain for controlling or operating the signal-circuit.

17. In an automatic electric signaling system, the combination of a track divided into blocks; signals located along the track to guard the blocks, a pair of signals guarding a block; signal-circuits for the signals, each signal-circuit containing a neutral magnet and a polarized magnet, the neutral magnet being for that signal of the pair which is located in advance of the other signal, and the polarized magnet being for the other signal of the pair, each signal-circuit containing also a polechauger; and means operated by a train for making responsive first the neutral magnet and then the polarized magnet to operate the signals.

18. In an automatic electric signaling sy*- tem, the combination of a track divided into blocks; signals located along the track to guard the blocks, a pair of signals guarding a block; signal-circuits for the signals, each signal-circuit containing a neutral magnet and a polarized magnet, the neutral magnet being for that signal of the pair which is located in advance of the other signal, and the polarized magnet beingfor the other signal of the pair, each signal-circuit containing also a pole-changer; and means operated by a train for making responsive first the neutral magnet and then the polarized magnet to operate the signals, the signal in advance of each pair of signals being arranged to operate or control the operation of the pole-changer.

In testimony whereof we have signed our names to'this specification in the presence of two subscribing witnesses.

ADONIRAM J. WILSON. \VILMER W. SALMON. 

